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Section 4 - REPAIR & ADJUSTMENTS
WARNING
DO NOT attempt any adjustments, maintenance or
service with the engine or blade running. STOP
blade. STOP engine. Remove spark plug wire from
spark plug and secure wire away from spark plug.
Engine and components can be extremely hot. Avoid
burns by allowing engine and components sufficient
time to cool. Wear heavy leather gloves when
handling or working around cutting blades. Blades
are extremely sharp and can cause severe injury.
4.2 WHEEL DRIVE CONTROL ADJUSTMENT
IMPORTANT: There should always be some slack in
the wheel drive control cable when the wheel drive
control is released.
The Wheel Drive Control requires periodic
adjustment to maintain proper belt tension on the
transmission poly-v belt. Verify proper tension by
checking the extension of the spring located at the
end of the wheel drive control cable.
1. Stop engine and allow sufficient time to cool.
2. Engage wheel drive control. The length of the
spring located at the end of the drive control cable
should increase between ½” and ¾”. See Figure 4.4.
If the spring does not increase between ½” and ¾”,
adjustment is required.
3. To adjust the amount the spring extends (belt
tension) slide the black spring cover up to expose
the spring. Unhook the cable eyelet from the spring.
4. Grip the hook on the spring and turn either
Clockwise or Counter-clockwise. Clockwise
increases spring extension and belt tension
Counter-clockwise decreases spring extension and
belt tension.
5. Attach the control cable eyelet to the spring and
recheck spring extension. If spring extension is
correct slide the spring cover down over the spring.
Start engine, and with blade control released (blade
stopped) verify the wheel drive functions properly. If
spring extension is not correct turn spring
Clockwise / Counter-clockwise.
6. If drive problems persist after adjusting the spring
extension Refer to Section “TROUBLESHOOTING”
of this manual or contact your local Snapper Dealer
for assistance.
FIGURE 4.4
4.3 DRIVEN DISC SERVICE
Note: Slippage may be due to improper adjustment
of clutch cable, worn belts, oily belts or broken
springs. If the mower does not propel itself properly,
check for the following problems:
1. Grease & oil on drive disc causing slippage.
2. Broken or disconnected drive spring.
3. Driven disc is out of adjustment.
4. Driven disc rubber ring is worn - does not contact
drive disc properly.
5. Worn Poly-V Belt or engine drive belt.
NOTE: If any of the above (1 thru 5) are causing
problems, service as follows:
4.3.1. Cleaning Drive Disc & Driven Disc.
If oil or grease on the drive disc or driven disc is
causing slippage, clean discs as follows:
1. Wipe away any oil or grease with a clean cloth.
2. Use either an approved grease solvent or hot,
soapy water to clean drive disc or driven disc.
3. Rinse components with clean water.
4. Dry components with a clean cloth.
4.3.2. Drive Spring Repair/Replacement
If drive spring is disconnected, reinstall onto thrust
plate. If spring is broken, replace with new spring.
WHEEL DRIVE
CONTROL CABLE
THERE SHOULD BE SOME
SLACK IN CABLE.
NOTE: GAP BETWEEN CABLE
EYELET & SPRING HOOK.