Bolens 1026 - Manual (Page 20)

Maintenance (continued)
A. Loosen jam nut (M) seated
against adjuster (N) on lower end of
control rod. Turn adjuster (N) up the rod
to increase spring length or down to
decrease length. Each 1-1/4 turn of
adjuster (N) equals 1/16" (1.5 mm) of
spring length.
B. Repeat as necessary until 11/16
in. +/-1/16 in. (17 mm +/-1.5 mm) differ­
ence between both spring measurements
is obtained, then tighten jam nut (M)
against adjuster (N).
3. Ensure that there is 1/16-1/8 in.
(1.5-3 mm) of clearance between brake
arm and auger drive belt. See "Brake Arm",
page 7.
Auger Drive Belt Replacement
To remove auger drive belt:
1. Remove two bolts securing belt cover
(AG, Fig. 6-4) to snowthrower. Remove
belt cover.
2. Remove two bolts securing belt guide
(0, Fig. 6-10) to back of engine. Remove
belt guide.
3. Move auger drive belt (N) out of
groove in auger drive pulley (P).
4. Move lower part of auger drive belt
off lower drive pulley (Q). To allow more
room for belt removal, pull brake arm (R)
outward.
5. Move lower part of auger drive belt up
through gap between lower pulleys.
To install auger drive belt:
1. Push lower end of auger drive belt (N)
down through gap between both lower
drive pulleys. Move belt forward and place
in lower drive pulley (Q) groove. When
placing lower end of auger drive belt on
pulley, push outward on brake arm (R) for
additional clearance.
2. Place upper end of auger drive belt
(N) into groove in pulley (P). Reinstall belt
guide (0).
3. Check auger drive belt and adjust as
necessary. See "Auger Drive Belt
Adjustment" on page 17.
4. Reinstall belt cover.
Slip Differential Adjustment
1. Remove black plastic cover (A, Fig. 6-
11) at end of right-hand axle shaft.
Remove outer jam nut (B). Remove inner
jam nut (C) and both pairs (four single) of
disc springs (D). Each pair consists of two
curved washers aligned so the concave
side of one washer faces the concave side
of the other washer. Reinstall disc springs
(D) and inner jam nut (C). Tighten jam nut
(C) by hand until it contacts disc spring,
then tighten 1 to 1-1/4 turns more. DO
NOT force nut further than 1-1/4 turns or
slip differential will not work properly.
2. Reinstall outer jam nut (B). Hold inner
nut (C) in place,. Use wrench to tighten
outer nut (B). Reinstall black plastic cover
(A) at end of right-hand axle shaft.
Drive Disc Clearance Adjustment
If gear shift lever does not move freely
through all positions in shift quadrant with
wheel drive lever disengaged, adjustment
may be required.
1. Remove boits attaching bottom plate
to rear of chassis. Remove plate.
2. Check clearance (A, Fig. 6-12)
between disc and rubber drive wheel.
Clearance should measure between 0.060"
and 0.125" (3-15 mm) when wheel drive
lever is disengaged (released). If clearance
is correct, drive disc clearance adjustment
is correct.
To adjust;
A. Loosen jam nut (C, Fig. 6-13).
Turn adjusting screw (D) until clearance is
correct.
B. Tighten jam nut and re-check
clearance. Ensure that gear shift lever
moves without hindrance through all posi­
tions in shift quadrant.
3. Slide bottom plate back into place.
Secure with boits previously removed.
4. Perform auger drive belt adjustment.
B
Fig. 6-11
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