Snapper 421620BVE Safety instructions & operator's Manual page 132

Section 4 - ADJUSTMENTS & REPAIR
WARNING
DO NOT attempt any adjustments, maintenance,
service or repairs with the engine running. STOP
engine. STOP blade. Engage parking brake. Remove
key. Remove spark plug wire from spark plug and
secure away from plug. Engine and components are
HOT. Avoid serious burns, allow all parts to cool
before working on machine. Fuel Filler Cap and vent
must be closed securely to prevent fuel spillage.
4.5.2. BELT REPLACEMENT
1. Follow WARNING statement found on this page.
2. Check fuel level in tank. If over 3/4 full, remove
tank. Refer to Section "REMOVING FUEL TANK". If
3/4 or less, proceed to next step.
3. Carefully stand Rear Engine Rider on rear bumper.
4. Route new belt through engine belt guide up to
engine pulley. See Figure 4.14.
ENGINE
DRIVE
PULLEY
ENGINE
BELT
GUIDE
REMOVE
STATIONARY
IDLER
REMOVE
IDLER
FIGURE 4.15
11. Adjust belt guide. See Figure 4.16 for proper belt-
to-belt guide clearances.
12. Reinstall mower drive belt cover.
1/16
FIGURE 4.14
5. Move transmission shift lever to the neutral (N)
position.
6. Rotate clutch yoke (clutch yoke shown in Figure
4.10) out with your hand and work belt between drive
disc and rubber driven disc.
7. To clear the primary chain case, move
transmission shift lever to the #5 position. Route
belt around drive disc and into drive pulley belt
groove. See Figure 4.14.
8. Remove idler. See Figure 4.15.
9. Route belt onto spindle pulley. Make sure belt is
inside spindle belt guide and idler belt guide. Route belt
as shown in Figure 4.15.
10. Reinstall idler removed in Step 8. The idler belt
guide tab should be positioned in the hole located on
idler arm. Tighten idler pulley bolt securely.
1/16"
FIGURE 4.16
RIGHT
SPINDLE
24