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Section 4 - REPAIR & ADJUSTMENTS
4.2 WHEEL DRIVE CONTROL ADJUSTMENT
(Engine To Transmission Drive Belt)
The wheel drive control requires periodic adjustment
to maintain proper engine to transmission drive belt
tension. The adjustment is located on the right handle
and requires no tools. See Figure 4.4.
IMPORTANT:
DO NOT operate engine when inspect-
ing or adjusting the drive belt.
1.
Visually check engine drive belt for cracking,
fraying, severed or belt strands exposed. Replace belt
before operating mower.
2.
To check for proper drive belt tension. STOP
engine. Shift ground speed control to 1st and engage
the wheel drive control.
3.
With the wheel drive control engaged, pull the
mower handles, moving the mower rearward. Observe
the rear wheels.
4.
If the rear wheels slide on the surface (no rotation)
the belt is properly tensioned and the control does not
require adjustment.
5.
If the rear wheels rotate, increase belt tension by
rotating the thumb screw COUNTER-CLOCKWISE.
6.
Turn thumb screw one turn at a time and recheck
tension (repeating steps 3-5).
7.
When proper belt tension has been set, operate
machine and verify proper wheel drive control function.
IMPORTANT:
DO NOT over-tighten wheel drive control.
DO NOT operate if control or drive does not function
properly. Contact your local SNAPPER Dealer for
assistance.
IMPORTANT:
If machine creeps forward after wheel drive
control is released the cable is too tight and must be
readjusted to eliminate all forward movement. Machine
must not have any forward movement when wheel drive
control is disengaged. If the wheel drive control fails to
return quickly to the “OFF” position when released, check
for a broken, binding, or kinked cable.
4.1 MOWER BLADE REPLACEMENT
4.1.2. BLADE SHARPENING
(Continued From Previous Page)
4.
Sharpen blade on a grinding wheel at an angle of
22 to 28 degrees. DO NOT sharpen blade beyond
original cutting edge. See Figure 4.3.
5.
Check blade for balance. If necessary, correct
balance by grinding heavy end of blade.
6.
Reinstall blade. See Figures 4.2 & 4.3. Check
torque of blade retaining cap screw. Recommended
torque should be 30 to 40 ft. lbs.
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP engine
and blade. Remove key. Disconnect spark plug wire
and secure away from spark plug. Engine and compo-
nents are HOT. Avoid serious burns, allow sufficient
time for all components to cool. Wear heavy leather
gloves when handling or working around cutting
blades. Blades are extremely sharp and can cause
severe injury.
!
!
FIGURE 4.3
ORIGINAL CUTTING EDGE
* DO NOT SHARPEN
BEYOND ORIGINAL
CUTTING EDGE OF
BLADE
22
0
TO 28
0
FIGURE 4.4
WHEEL DRIVE
CONTROL
HOLD BLADE
CONTROL AGAINST
HANDLEBAR AND
ENGAGE WHEEL
DRIVE CONTROL
THUMBWHEEL
ADJUSTER