Cleaning And Storage; Optional Accessory - Craftsman INCREDI-PULL 316.791961 Operator's Manual

• Both rocker arms move freely,
and both valves are closed
If these statements are not true,
repeat step 6.
7. Slide the feeler gauge between
the rocker arm and the valve
return spring. Measure the
clearance between the valve
stem and rocker arm (Fig. 33).
Measure both the intake and
exhaust valves.
The recommended clearance for both intake and exhaust is .003 – .006 in.
(.076 – 0.152 mm). Use a standard automotive .005 in. (0.127 mm) feeler
gauge. The feeler gauge should slide between the rocker arm and valve stem
with a slight amount of resistance, without binding. See Figures 32 and 33.
8. If the clearance is not within specification:
a. Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver
(Fig. 33).
• To increase clearance, turn the adjusting nut counterclockwise.
• To decrease clearance, turn the adjusting nut clockwise.
b. Recheck both clearances, and adjust as necessary.
9. Reinstall the rocker arm cover using a new gasket. Torque the screw to
20–30 in•lb (2.2–3.4 N•m).
10. Check the spark plug and reinstall. See Replacing the Spark Plug.
11. Replace the spark plug wire.
12. Reinstall the engine cover. Check alignment of the cover before tightening
the screws. Tighten screws.
REPLACING THE SPARK PLUG
Champion
Use a replacement
is 0.025 in. (0.635 mm). Remove the plug and check its condition per the
Maintenance Schedule.
1. Stop the engine and allow it to cool. Remove the six (6) screws on the back
of the engine cover with a Flat-head or T-25 Torx screwdriver (Fig. 30).
2. Grasp the plug wire firmly and pull the cap from the spark plug.
3. Clean dirt from around the spark plug. Remove the spark plug from the
cylinder head by turning a 5/8 in. socket counterclockwise.
WARNING:
Do not sand blast, scrape or clean spark plug
electrodes. Grit in the engine could damage the cylinder.
4. Replace cracked, fouled or
dirty spark plug. Set the air
gap at 0.025 in. (0.635 mm)
using a feeler gauge (Fig. 34).
5. Install a correctly-gapped
spark plug in the cylinder
head. Turn the 5/8 in. socket
clockwise until snug.
If using a torque wrench torque to:
110-120 in.•lb. (12.3-13.5 N•m)
Do not over-tighten.
MAINTENANCE AND REPAIR INSTRUCTIONS
Exhaust Rocker Arm
Adjusting
Nut
0.003–0.006 in.
(0.076–0.152 mm)
Fig. 33
® #RDZ4H spark plug
. The correct air gap
0.025 in.
(0.635 mm)
Fig. 34
CLEANING
Feeler
WARNING:
Gauge
unit off and allow it to cool before cleaning or maintaining it.
Use a small brush to clean off the outside of the unit. Do not use strong
detergents. Household cleaners that contain aromatic oils such as pine and
lemon, and solvents such as kerosene, can damage plastic housing or handle.
Wipe off any moisture with a soft cloth.
Valve Stem
STORAGE
• Never store the unit with fuel in the tank where fumes may reach an open
flame or spark.
• Allow the engine to cool before storing.
• Lock up the unit to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
Short Term Storage (1-2 weeks)
1. Store the unit in a horizontal position. If this is not possible, store the
unit vertically with the engine at the top.
Long Term Storage
1. Remove the fuel cap, tip the unit and drain the fuel into an approved
container.
NOTE: Do not use gasoline that has been stored for more than 30 days.
Dispose of old gasoline in accordance with federal, state and local
regulations.
2. Start the engine and allow it to run until it stalls. This ensures that all
gasoline has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 5 drops of
high quality motor oil into the cylinder. Pull the starter rope slowly to
distribute the oil. Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil from the cylinder
before attempting to start the trimmer after storage.
4. Change the oil, referring to Changing the Oil. Dispose of the old oil in
accordance with federal, state and local regulations.
5. Thoroughly clean the unit and inspect for any loose or damaged parts.
Repair or replace damaged parts and tighten loose screws, nuts or
bolts. The unit is ready for storage.
PLUG-IN POWER START AND POWER BIT START FEATURES
This unit is designed to be started with an optional Plug-In Power Start or
Power Bit Start that are sold separately. If choosing to start the unit using
one of these features or have questions please contact your local retailer or
call 1-800-4-MY-HOME®, for more information and purchasing. You may
also go to www.craftsman.com.
Item No.
316.85951 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Plug-In Power Start
316.85952 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Power Bit Start
9
To avoid serious personal injury, always turn the

OPTIONAL ACCESSORY

Electric Start Feature
Description