Part No 901014
Form No F072111C
7
LB Owner’s Manual
MAINTENANCE
P
ERIODIC
M
AINTENANCE
Periodic maintenance should be performed at the following intervals:
Maintenance Operation
Every Use (daily)
Every 5 hrs (daily)
Inspect for loose, worn or damaged parts.
z
Clean Debris bag
z
Check bag strap tightness
z
Engine (See Engine Manual)
Check for excessive vibration
z
Troubleshooting
P ro b le m
P o s s ib le C a u s e
S o lu tio n
A b n o rm a l v ib ra tio n .
· L o o s e o r o u t o f b a la n c e im p e lle r o r
lo o s e e n g in e
· C h e c k im p e lle r a n d re p la c e if re q u ire d .
C h e c k e n g in e
W ill n o t v a c u u m o r h a s p o o r
v a c u u m p e rfo rm a n c e
· D irty d e b ris b a g . N o zzle h e ig h t s e t to o
h ig h o r lo w . H o s e k it c a p m is s in g .
C lo g g e d n o zzle o r e x h a u s t. E x c e s s iv e
q u a n tity o f d e b ris .
· C le a n d e b ris b a g . S h a k e b a g c le a n o r
w a s h . A d ju s t n o zzle h e ig h t. C h e c k fo r
h o s e k it c a p . U n c lo g n o zzle o r e x h a u s t.
A llo w a ir to fe e d w ith d e b ris
E n g in e w ill n o t s ta rt.
· T h ro ttle in o ff p o s itio n . O u t o f g a s o lin e .
B a d o r o ld g a s o lin e . S p a rk p lu g w ire
d is c o n n e c te d . D irty a ir c le a n e r
· C h e c k th ro ttle , C o n n e c t s p a rk p lu g w ire .
C le a n o r re p la c e a ir filte r. O r c o n ta c t a
q u a lifie d s e rv ic e p e rs o n .
E n g in e is lo c k e d , w ill n o t p u ll
o v e r.
· D e b ris lo c k e d in im p e lle r. E n g in e
p ro b le m .
· S e e p a g e 1 0 . C o n ta c t a e n g in e s e rv ic e
d e a le r fo r e n g in e p ro b le m s
N o zzle s c ra p e s g ro u n d in
lo w e s t h e ig h t s e ttin g .
N o zzle h e ig h t o u t o f a d ju s tm e n t
A d ju s t n o zzle h e ig h t (S e e N o zzle h e ig h t
fin e a d ju s tm e n t fo r h a rd s u rfa c e s o n
p a g e 1 0
IMPELLER REMOVAL
1. Wait for engine to cool and disconnect spark plug.
2. Drain fuel and oil from engine.
3. Remove bag and remove upper handle.
4. Invert and support machine without engine touching to prevent damage to recoil starter.
5. Remove rear wheels (item 7), and bolt axle bracket (item 48), [one each side, closest to middle inlet
plate (item 3)], washer (item 57) and nut (item 49).
6. Remove intake wrapper (item 2), assembly and middle inlet plate (item 3), eight screws and eight nuts.
7. Remove impeller bolt (item 37) and lock washer (item 36).
8. Lift impeller free of engine.
9. If impeller does not remove easily, obtain a 1" (25.4mm) longer bolt of the same diameter and thread
type as the impeller bolt. Thread longer bolt by hand into crankshaft until bolt bottoms. Using a suitable
gear or wheel puller against the bolt head and impeller back-plate (near the blades), remove impeller from
shaft.
10. Reinstall new impeller, impeller bolt and lock washer in reverse order. Torque impeller bolt to 33-38
ft-lbs (45-52 N
.
m).
