Part No. 811202 Form No. F022404A
Page 8 of 12
Use only a qualified mechanic for
any adjustments, disassembly or any
kind of repair .
DISCONNECT SPARK PLUG WIRE
BEFORE SERVICING UNIT.
WARNING: TO AVOID PERSONAL INJURY, ALWAYS
TURN MACHINE OFF, MAKE SURE ALL MOVING
PARTS COME TO A COMPLETE STOP.
ENGINE: See engine manufacturer
operator's instructions.
IMPELLER REMOVAL
17
MAINTENANCE
17.1
RECONNECT SPARK PLUG WIRE,
GUARDS AND HOSE BEFORE START-
ING ENGINE.
Remove and Service foam air cleaner and inner air filter every 25
hours of use or every 10 hours or less for extremely dusty condi-
tions (see engine manual).
Keep engine and engine cooling fins clean from dust and debris
build-up.
Replace any worn or damaged parts as required.
DO NOT operate if excessive vibration occurs. If excessive vibration
occurs, shut engine off immediately. Remove spark plug wire and
check for damaged impeller, loose impeller bolt, loose impeller key
or lodged foreign objects. Refer to parts list (item 16) on page 11 for
proper torque specifications.
1. Wait for engine to cool and disconnect spark plug.
2. Disconnect hose from unit.
3. Remove boom assembly.
4. Remove cable assy. interlock (item 43), from front plate of
assembly (item 41).
5. Remove front plate assembly (item 41).
6. Remove impeller bolt (item 16) and lock washer (item 17).
7. Pull the impeller outward. If impeller slides freely, proceed to (steps
10 to 14 for TR units or to step 14 for HTR units). If not, complete
steps 8 thru 9 as required.
8 . Place two crowbars between impeller and housing on opposite
sides. Pry impeller away from engine until it loosens. Using a
penetrating oil can help loosen a stuck impeller.
9. If the impeller does not loosen, obtain a 1” (25.4mm) longer bolt
of the same diameter and thread type as the impeller bolt. Thread
longer bolt by hand into the crankshaft until bolt bottoms. Using a
suitable gear or wheel puller against the bolt head and the impeller
back-plate (near the blades), remove impeller from shaft.
10. [TR ONLY] Remove engine base mounting bolts, and nuts.
11. [TR ONLY] Access engine bolts on inside of housing that
connect engine face to the fan housing. Bend ends of lock clip away
from bolt heads and remove bolts.
12. [TR ONLY] Slide engine shaft out of impeller.
13. [TR ONLY] When impeller is free of the engine shaft, align
impeller with opening, and diagonally lift impeller out of housing.
14. Using a new impeller bolt and lockwasher (and engine bolt lock
clip, TR only), reinstall (engine for TR only) and new impeller in
reverse order.
15. Tighten impeller bolt. Torque HTR1803V and TR1304H impeller bolt
to [ 50 Ft. Lbs. (68 N
.
m)] and TR1104 to [ 60 Ft. Lbs. (81.4 N
.
m)] (see
item 16 on page 11).
16. Reinstall spark plug wire.
ENGINE
When servicing engine refer to specific manufacturers engine
owner's manual. All engine warranty is covered by the specific
engine manufacturer. If your engine requires warranty or other
repair work contact your local servicing engine dealer. When
contacting a dealer for service it is a good idea to have your
engine model number available for reference(See table page 11).
If you can not locate a servicing dealer in your area you can
contact the manufacturers national service organization.
To reach:
Briggs & Stratton: 800-233-3723
American Honda: 800-426-7701
(12 pages)
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