BOLENS 1969-1972 - Fairbanks Snow Travelers

Bolens
FI9. 5—Vi«w of •nglii* compaitment OH
late mochln* showing points of adiustment.
A. Chaincaw cover B. Adjuating screw
C. Brak«untt
Fig. 8—ExplodMl vlow of
chotn cose ond ossoclotod
ports ttsod on modols with
onclosod choin.
1. Intermediate shaft
2. Spacer
3. Snap ring
-I. Oil seal
5. Bearing cone
6. Bearing cup
7. Adjusting screw
8. Eccentric housing
9. O-rlng
10. Disc
11. Drive sprocket
12. Nut
13. Upper cover
14. Lower cover
15. Snap ring
16. Driven sprocket
17. Chalncase
18. Bearing
19. on seal
16
14
LEVER
ADJUSTWSNT
NUTS
q
lovor position
Is adfvstod ot coblo
onehor nuts. Woor odfustmont
Is ol»tolnod by removing
eotttr pin and
turning castollatod nut to
componsoto for woar*
10
ing cap screw (B) in eccentric housing.
Push cap screw down in slot to
tighten chain, or up to loosen. If cap
screw bottoms in slot before slack is
removed, install bolt in alternate
threaded hole which has appeared at
top of slot. Tighten cap screw securely
and reinstall plastic plug when
tension is correct.
BRAKE. Friction disc for the caliper
type disc brake is combined with
the main drive (upper) sprocket
on early models (see Fig. 6). Late
models use fixed face of driven sheave
as friction surface as shown at (C—
Fig. 5).
Brake should not drag when released
but should fully engage before hand
lever touches handlebar grip. To adjust
for wear, remove cotter pin (Fig.
6) and turn castellated nut until there
is a slight drag on brake disc, back off
Fig. 7—To adiust track tonsion, raiso roar
of mochlno and loosen clomp scrow nuts
(11. Turn adiusting scrows (2) oqually until
distance CD) is as outlined in toxt.
38
one notch and reinstall cotter pin.
Hand lever travel is adjusted at the
two anchor nuts.
TRACK. To adjust track tension,
raise rear of machine until track is
clear of ground, then measure distance
between running board and lowest
point of swing arm as shown at
(D—^Fig. 7). Measurement should be
3-3% inches for 1969 models; four
inches for 1970 models and as follows
for 1971 machines:
Models 295 & 340
4% in.
Model 292
4H in.
To adjust the track, loosen the two
clamp bolts (1) and turn adjusting
bolt (2) until measurement is correct.
NOTE: Whenever track tension has
been adjusted, alignment MUST be
checked as outlined in TRACK SERV-
ICE Section of this manual.
1. Bolt •'>. Sprint cap
2. Weight unit *>. Idler
3. Moving flange 7. Flange & hub
4. Spring
9—Exploded view of centrifugal drive
sheave used on BOLENS Sprint.
12 11
q. to—Exploded view of torque sensing
driven sheave.
1. O-ring
2. Eccentric housing
3. Bearing cup
4. Bearing cone
5. Oil seal
6. Snap ring
7. Spacer
8. Hub
9. Fixed flange
10. Moving flange
11. Floating hub
12. Bushing
13. Torque spring
14. Nylon shoe
15. Intermediate shaft
16. Thrust washer
17. Snap ring
OVERHAUL
SKIS. Steering skis, spindles and associated
parts are interchangeable
from right to left. Skis have renewable
wear runners. Ski springs are
equipped with a conical rubber
bumper which should be installed to
rear.
IMPORTANT: DO NOT tighten
locknut on bumper stud tight against
spring leaf, or action of the spring will
be restricted.
TORQUE CONVERTER. Refer to
Fig. 9 for an exploded view of torque
converter drive sheave and to Fig.
10 for driven sheave. Torque spring
(13—Fig. 10) should be preloaded
4 turn (one cam) when unit is
assembled.