McCulloch MS1436NAV Service Manual
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McCulloch MS1436NAV Service Manual

McCulloch MS1436NAV Service Manual

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See also: User Manual
Service Manual
MCCULLOCH CHAIN SAW - MS1436NAV
NOTE: These materials are for use by trained technicians experienced in the service and repair of outdoor power equipment of the
kind described in this publication, and are not intended for use by untrained or inexperienced individuals. These materials are
intended to provide supplemental information to assist the trained technician. Untrained or inexperienced individuals should seek
the assistance of an experienced and trained professional. Read, understand, and follow all instructions and use common sense
when working on power equipment. This includes the contents of the product's Operators Manual, supplied with the equipment. No
liability can be accepted for any inaccuracies or omission in this publication, although care has been taken to make it as complete
and accurate as possible at the time of publication. However, due to the variety of outdoor power equipment and continuing
product changes that occur over time, updates will be made to these instructions from time to time. Therefore, it may be
necessary to obtain the latest materials before servicing or repairing a product. The company reserves the right to make changes
at any time to this publication without prior notice and without incurring an obligation to make such changes to previously published
versions. Instructions, photographs and illustrations used in this publication are for reference use only and may not depict actual
model and component parts. © Copyright 2005 MTD Products Inc. All Rights Reserved.
MTD Products LLC - Product Training and Education Department
FORM NUMBER 769-01424
9/2004

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  • Page 1 Instructions, photographs and illustrations used in this publication are for reference use only and may not depict actual model and component parts. © Copyright 2005 MTD Products Inc. All Rights Reserved. MTD Products LLC - Product Training and Education Department...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Air Filter ..................................1 Fuel Filter ..................................2 Spark Arrester Screen .............................2 Spark Plug ................................3 Removal of Brake Assembly .............................3 Removing the Chain and Bar ............................4 Removal of Clutch and Drum Assembly ........................4 Removal of the Chain Oiler ............................5 Starter Servicing ................................7 Air Gap ..................................9 Flywheel Removal ..............................9...

  • Page 5: Air Filter

    Refer to the Owners Manual for procedures for proper setup and operation. Additional information can be found in the 2004 MTD Update Manual: Form number # 769-00960. IMPORTANT: Prior to servicing the chain saw, Figure 2 remove the spark plug wire from the spark plug.

  • Page 6: Fuel Filter

    1.4. Remove the wire screen from the air box. See 2.5. Lift filter out of tank. See Figure 4. Figure 3. Fuel Filter Figure 4 Figure 3 2.6. Pull filter off with a twisting motion. Discard filter. 1.5. Wash screen in clean, warm, soapy water. Rinse 2.7.

  • Page 7: Spark Plug

    3.2. Using a medium Phillips screwdriver, remove the 4.4. Using the scrench, remove the spark plug. See 2 screws that hold the spark arrester cover to the Figure 7. muffler. See Figure 6. Scrench Figure 7 Figure 6 4.5. Check electrode gap with wire feeler gauge and 3.3.

  • Page 8: Removing The Chain And Bar

    5.3. Using a T-25 Torx wrench, remove the screw securing the cover to the unit. See Figure 8. 5.4. Remove the cover. REMOVING THE CHAIN AND BAR 6.1. Remove the brake assembly cover. See REMOVAL OF BRAKE ASSEMBLY Section. 6.2. Remove the chain from the bar.

  • Page 9: Removal Of The Chain Oiler

    7.5. Using a 13mm socket, remove the nut securing 7.7. Inspect and repair as needed. the clutch and drum assembly to the crankshaft. NOTE: During assembly, the machined groove See Figure 13. in the drum/sprocket assembly must engage the tabs on the nylon worm gear. See Figure 15. Tabs Machined Groove Hex Nut...
  • Page 10 8.5. Using needle nose pliers, remove the worm 8.7. Remove the shaft from the oil pipe. Inspect the gear. See Figure 17. shaft for damage. See Figure 19. Worm Gears Figure 17 Figure 19 8.6. Using the tip of a small screwdriver, lift the rear 8.8.

  • Page 11: Starter Servicing

    8.9. Remove the brass pump housing from the oil STARTER SERVICING pipe. See Figure 21. 9.1. Using a T-25 Torx wrench, remove the four screws attaching the starter housing assembly to the housing assembly. See Figure 23. Pump Housing Torx Screws Figure 21 NOTE: The small hole in the brass pump hous- Figure 23...
  • Page 12 9.4. Using a T-25 Torx driver, remove the screw 9.6. If the starter return spring is broken, lift of the attaching the pawl retainer to the pulley housing. spring retaining cover and replace the spring. See Figure 25. See Figure 27. Torx Screw Notch Spring Retainer Cover...

  • Page 13: Air Gap

    AIR GAP 11.5. Using a 13mm socket, loosen but do not remove the nut securing the flywheel to the Using a feeler guage, measure the air gap between the crankshaft. See Figure 30. flywheel and the coil. The measurement should be between .08”-.010”.

  • Page 14: Carburetor Removal

    11.7. Place a large screwdriver under the flywheel and 12.4. Using a small screwdriver, lift out the metal while applying upward pressure, tap on the nut screen. on the drive shaft to release the flywheel from 12.5. Using a 8mm socket, remove the two nuts the shaft.
  • Page 15 12.9. Using a small flat bladed screwdriver, pry the 12.11. Pry the choke handle from the carburetor. See fuel line from the carburetor inlet. See Figure 35. Figure 37. Fuel Line Choke Lever Figure 35 Figure 37 NOTE: In order to remove the throttle cable from 12.10.

  • Page 16: Carburetor Adjustment

    12.16. Pull rearward on the carburetor until it clears the 12.18. Remove the primer tube from the lower left side two mounting screws. See Figure 39. of the carburetor. See Figure 41. Mounting Screws Primer Tube Figure 39 Figure 41 12.17.

  • Page 17: Chain Tension Adjustment

    CHAIN TENSION ADJUSTMENT 14.1. Chain tension adjustments can be made using a standard screwdriver. See Figure 43. Tensioner Screw Figure 43 NOTE: Follow proper chain tensioning proce- dures outlined in the User Manual.

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