Husqvarna 335XPT Workshop Manual
  1. Manuals
  2. Brands
  3. Husqvarna Manuals
  4. Chainsaw
  5. 335XPT California
  6. Workshop manual

Husqvarna 335XPT Workshop Manual

Hide thumbs Also See for 335XPT:
Table of Contents

Advertisement

Quick Links

335XPT
Workshop Manual
101 89 44-26

Advertisement

Table of Contents
loading

Related Manuals for Husqvarna 335XPT

Summary of Contents for Husqvarna 335XPT

  • Page 1 335XPT Workshop Manual 101 89 44-26...

  • Page 2: Table Of Contents

    CONTENTS Introduction ............ 3 Safety instructions .........4 Key to symbols ..........5 Technical data ..........6 Tools ..............8 Trouble shooting ..........10 Service data ..........12 Safety equipment .........14 Starter ............19 Ignition system ..........21 Centrifugal clutch .........23 Carburettor............ 25 Tank unit............33 AV-System .............

  • Page 3: Introduction

    Special tools must be used during certain procedures. All service tools are listed in this workshop manual. Usage is evident from respective sections. Numbering Always use Husqvarna's original: • Spare parts Positioning indicators to components within the figures are • Service tools denoted by A, B etc.

  • Page 4: Safety Instructions

    SAFETY INSTRUCTIONS General instructions Special instructions The fuel used in the chain saw has the following dangerous Workshops where chain saws are to be repaired must be characteristics: equipped with safety equipment as set out in local directives. • The liquid and its vapours are poisonous. No one may repair the chain saw without first reading and •...

  • Page 5: Key To Symbols

    KEY TO SYMBOLS Symbols CAUTION! Chain saws can be dangerous! Switch off the engine by moving the stop Careless or incorrect use can result in switch to the STOP position before carrying serious or fatal injury to the operator or out any checks or maintenance.

  • Page 6: Technical Data

    TECHNICAL DATA Displacement Bore Stroke Max. power/ speed / cubic inches Ø mm/Ø inches mm/inches kW/hp/ rpm 35.2/2.1 38/1.5 31/1.22 1.6/2.1/ 9 600 Spark plug gap Ignition system Air gap Carburettor mm/inches mm/inches 0.7/0.028 FHP/CD 0.3/0.01 Walbro WT Bar length Chain speed at Chain pitch Drive link gauge...
  • Page 7 TECHNICAL DATA Idling speed Engagement speed Max. speed Spark plug 2 800 4 100 13 800 Champion NGK BPMR 7A Fuel tank volume Oil pump capacity Oil tank volume Automatic oil pump Litres/US. pint /min Litres/US. pint 0.3/0.63 0.16/0.34 Weight without bar and chain Weight with bar and chain Handle heater kg/lbs...

  • Page 8: Tools

    TOOLS – English...
  • Page 9 TOOLS The tools listed here are service tools used for the chain saw in question. In addition to these tools a standard set of tools is also required. Description Used to Order no. Piston assembly tool Assembling the piston 502 50 70-01 Cover plate, manifold Seal the manifold 502 52 01-01...

  • Page 10: Trouble Shooting

    TROUBLE SHOOTING Trouble shooting schematic Idling (low rpm) (cont.) Faults that can develop on the chain saw are divided into four Worn needle valve/needle Idles when L-screw groups as follows. In each category, possible malfunctions are is closed Leaking control diaphragm/cover plate shown on the left, with a list of possible faults on the right.
  • Page 11 TROUBLE SHOOTING High rpm Acceleration and retardation Will not run at full Adjust H-screw Does not accelerate Adjust L-screw throttle Blocked air filter Adjust H-screw Blocked fuel tank ventilator Blocked air filter Blocked fuel filter Blocked fuel tank ventilator Fuel line blocked Blocked fuel filter Loose or damaged fuel line Fuel line blocked...

  • Page 12: Service Data

    SERVICE DATA 20-26 Character key 8-10 8-10 Numbers by components that are bolted refer to the tightening torque in Nm. = Lubricate using two-stroke oil. = Lubricate using engine oil. = Lubricate using grease. = Glued using 2-component adhesive. = Sealed using silicone. –...
  • Page 13 SERVICE DATA 2,5-4 8-10 10-15 2,5-4 20-26 2,5-4 English –...

  • Page 14: Safety Equipment

    SAFETY EQUIPMENT Chain brake Dismantling Check that the chain brake is in the off position and dismantle the clutch cover and bolt (A). Remove the circlips (B) and (C) and press/knock out the pins. Remove the handle. Remove the four bolts (D) and remove the cover. WARNING! Check that the brake is in the on position.
  • Page 15 SAFETY EQUIPMENT Assembly Assemble the chain brake as follows: Screw together the brake band and knee link. Grease the moving parts on the knee link and assemble the unit in the cover and knock in pin (E). Fit the kickback guard, insert the two pins and fit the circlips (B) and (C).
  • Page 16 SAFETY EQUIPMENT Chain catcher Remove the chain and bar. See Operator's manual. Check the spike (J) and chain catcher (K). Replace if the parts are damaged. Bolts shall be tightened to 6 Nm. Fit the chain and bar. See Operator's manual. Muffler WARNING! Do not touch the muffler until it has cooled.
  • Page 17 SAFETY EQUIPMENT Throttle lock and stop function Dismantling Dismantle the throttle lock as follows: Dismantle the clutch cover and carburettor cover. Knock out the pins (B) and (C) from the left-hand side and unscrew the bolt (D) and pull up the throttle lock (A). Disconnect the choke rod (G) from the carburettor using a screwdriver and dismantle the choke lever/stop button.
  • Page 18 SAFETY EQUIPMENT Assembly Assemble the parts as follows: Connect the electrical connection to the lock plate (E) and choke lever/throttle (J). Slide in the throttle (H). At the same time fit the throttle rod (I) on the throttle. Do not hook it onto the bearing (F) yet. Using thin-nosed pliers fit the lock plate (E).

  • Page 19: Starter

    STARTER WARNING! • The recoil spring is under tension when in its housing in the starter and can, with careless handling, fly out and cause personal injury. • Care should be exercised when replacing the recoil spring or starter cord. Wear protective glasses. Dismantling Unscrew the four bolts that hold the starter (A) and cooling air guide (B) in position.
  • Page 20 STARTER Cleaning and inspection Clean the parts and check as follows: Starter cord. The dogs in the starter pulley. That the pawls on the flywheel are OK, and spring back towards the centre and move freely. Assembly Lubricate the new recoil spring using thin oil without taking it out of its housing.

  • Page 21: Ignition System

    IGNITION SYSTEM Dismantling Dismantle the starter (A) and cooling air guide (B). Remove the spark plug and fit the piston stop (C) in the spark plug hole. See service tools. It is important that the piston stop is screwed in completely. Loosen the cable (D) from the ignition module.
  • Page 22 IGNITION SYSTEM Cleaning and inspection Clean all the parts, especially the flywheel and the shaft taper. Check that the flywheel is not cracked or damaged in any other way. Assembly Fit the starter pawls (G). Fit the flywheel on crankshaft. Rotate lightly so that the flywheel's key aligns with keyway on the crankshaft.

  • Page 23: Centrifugal Clutch

    CENTRIFUGAL CLUTCH Dismantling Dismantle the clutch cover. Dismantle the spark plug and fit the piston stop (A). It is important that the piston stop is screwed in completely. Use a 19 mm spanner and dismantle the clutch hub. NOTE! Left-hand thread. Remove the washer (B), clutch drum (C) and needle bearing (D).
  • Page 24 CENTRIFUGAL CLUTCH Assembly When the springs have been replaced assemble as follows: A. Fit the two clutch shoes and the two springs and put the unit in a vice. B. Tighten the vice so that the shoe holder can be pushed down between the clutch shoes.

  • Page 25: Carburettor

    CARBURETTOR Description WARNING! The fuel used in the chain saw poses the following hazards: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. The diagrams in this description do not correspond with the carburettor fitted on the chain saw.
  • Page 26 CARBURETTOR Operation The carburettor operates differently in the following modes: Cold start mode In the cold start mode the choke valve (D) is fully closed. This increases the vacuum in the carburettor and fuel is easier to suck from all the diffuser jets (E, F and G). The throttle valve (H) is partly open.
  • Page 27 CARBURETTOR Dismantling WARNING! The fuel used in the chain saw poses the following hazards: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. Dismantle the chain and bar. See the Operator's manual. Dismantle the carburettor cover (R).
  • Page 28 CARBURETTOR Remove the cover (A) over the metering unit and carefully 12. Remove the plugs (G) as follows. remove the control diaphragm (B) with the gasket (C). A. Drill a hole in the plug. B. Insert a screwdriver or punch in the hole and prise out Undo the screw (D) and take out the needle valve (P) with the plug.
  • Page 29 CARBURETTOR Cleaning and inspection WARNING! Petrol has the following hazardous properties: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. Clean all components in pure petrol. WARNING! Never direct the compressed air jet towards the body.
  • Page 30 CARBURETTOR Fit the high speed needle (H) as follows: A. Screw in the new H-needle clockwise until it bottoms. Thereafter counter-clockwise 3 1/2 turns. B. Press on a new locking cap on the H-needle until the first stop, i.e. the locking cap should not be fixed. Fit the low speed needle (L) as follows: A.
  • Page 31 CARBURETTOR Assembly (continued) WARNING! The fuel used in the chain saw poses the following hazards: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. After the carburettor has been pressure tested, continue assembly as follows: Insert the carburettor a little and fit the throttle control (X).
  • Page 32 • Before any adjustments are made the air filter should be clean and the cylinder cowling fitted. Adjusting the carburettor while Your Husqvarna product has been designed and manufactured a dirty air filter is in use will result in a leaner mixture when the to specifications that reduce harmful emissions.

  • Page 33: Tank Unit

    TANK UNIT WARNING! The fuel used in the chain saw poses the following hazards: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. Dismantling Dismantle the following parts: Chain and bar. See the Operator's manual. Centrifugal clutch.
  • Page 34 TANK UNIT Replacing the fuel pipe and fuel filter Remove the fuel filter and attached pipe using hook 502 50 83-01. Pull the pipe out through the rubber grommet. Remove the rubber grommet. 80 mm/ 3.15" Fit a new rubber grommet on the pipe so that the pipe protrudes approx.
  • Page 35 TANK UNIT Replacing the tank ventilator, oil tank Pull out the ventilator's rubber fastener using a pair of pliers. Fit a new pin, vyon-plug and valve in a new rubber fastener, place the unit in the hole in the tank from the outside. Pull in the ventilator with fitted vyon-plug and pin using a pair of long-nosed pliers from inside the tank.
  • Page 36 TANK UNIT WARNING! The fuel used in the chain saw poses the following hazards: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. Assembly Assemble the following parts: Fit the engine unit from the clutch side and at the same time slide on the oil pipe (E).

  • Page 37: Av-System

    ANTI-VIBRATION SYSTEM Anti-Vibration System WARNING! The fuel used in the chain saw poses the following hazards: • The fluid and its vapours are poisonous. • Can cause skin irritation. • Is highly inflammable. Dismantling Dismantle the following parts: Chain and bar. See the Operator's manual. Centrifugal clutch.

  • Page 38: Crankshaft, Piston And Cylinder

    CRANKSHAFT, PISTON AND CYLINDER Dismantling Dismantle the following parts: Chain and bar. See the Operator's manual. Centrifugal clutch. See page 23. Muffler. See page 16. Carburettor. See page 27. Starter. See page 19. Ignition system and spark plug. See page 21. Tank unit.
  • Page 39 CRANKSHAFT, PISTON AND CYLINDER Cleaning and inspection Clean all parts, scrape off any gasket residue from the crank- case and cylinder contact surfaces. Remove carbon deposits from the following areas: The top of the piston. The top of the cylinder (bore). The cylinder exhaust port.
  • Page 40 CRANKSHAFT, PISTON AND CYLINDER Assembly Assemble the piston and cylinder as follows: NOTE! Ensure that no dirt or other foreign particles fall into the dismantled components. Fit the bearing (C) using a suitable punch. Fit the intake manifold (B) on the cylinder. Make sure the intake manifold is turned as shown in the figure.
  • Page 41 CRANKSHAFT, PISTON AND CYLINDER Pressure testing The following parts must be dismantled when the crankcase and cylinder are pressure tested: • Carburettor. See page 27. • Muffler. See page 16. • Starter. See page 19. • Flywheel. See page 21. Perform pressure testing as follows: Fit the cover plate 502 52 01-01 on the intake manifold.

  • Page 42: Bar Bolt

    BAR BOLT Dismantling Dismantle the following parts: Chain and bar. See the Operator's manual. Centrifugal clutch. See page 23. Muffler. See page 16. Carburettor. See page 27. Starter. See page 19. Ignition system and spark plug. See page 21. Tank unit. See page 33. Continue dismantling as follows: Put the engine unit in a vice and knock out the bar bolt (A) using a hammer.

  • Page 43: Oil Pump

    OIL PUMP Dismantling Dismantle the following parts: Chain and bar. See the Operator's manual. Centrifugal clutch. See page 23. Muffler. See page 16. Carburettor. See page 27. Starter. See page 19. Ignition system and spark plug. See page 21. Tank unit. See page 33. Cylinder and crankshaft.
  • Page 44 OIL PUMP Assembly Assemble as follows: Oil and fit the pump piston (B), spring and washer. Press in the unit and screw in the adjuster screw (A) and spring at the same time. Fit the guide (C). Fit the cover plate (D). Now assemble the following parts: Cylinder and crankshaft.

Table of Contents