Bolens 1026 Manuel d'utilisateur télécharger pdf (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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