MI 1061 10
idle adjustment
is for smooth low speed operation and
this adjustment, if necessary, must be made with the
carburetor throttle lever closed.
For further information on the carburetor, see the
Zenith operating and service instructions in the rear
of this manual.
AIR CLEANER
The
dry element
air cleaner, illustrated in
Fig. 7
,
must be serviced frequently, depending on dust condi-
tions where the engine is being operated.
Operating the engine under dusty conditions
without servicing the air cleaner may wear out
cylinder, piston, rings and bearings in a few days
time, and result in costly repairs.
The filter cartridge is easily removed by unscrewing the
wing nut and taking off the cover.
See Fig. 7
.
Service daily,
if engine is operating in very dusty
conditions. Remove cartridge and shake out the ac-
cumulated dirt (do not tap or strike element – it may
become damaged). Wipe out dirt from inside cover.
Once each week;
the filtering cartridge should be
taken out and rinsed under a faucet with cold water,
then wash by repeated dipping for several minutes in
a solution of lukewarm water with a mild,
non-sudsing
detergent. Rinse in cold water from the inside out,
and allow to dry overnight before installing. In cold
weather, protect element from freezing until dry.
Do not use gasoline, kerosene, or solvent for cleaning
– Do not oil element.
After five washings or one year of service, replace
cartridge. New cartridges are available at you
Wis-
consin Motor dealer
. Refer to parts list section for re-
placement part number.
CRANKCASE BREATHER
A
reed
type
breather valve
is located in the valve
spring compartment, as illustrated in
Fig. 8
. The
valve maintains a partial vacuum in the crankcase,
and thus eliminates internal crankcase pressure that
would cause oil leaks at the seals, gaskets and
breaker box. Keep complete breather system free from
dirt, and replace reed if it becomes damaged.
Oil in breaker box
is the direct result of faulty
breather action caused by dirt stuck between reed
and seat. This condition can be remedied in the fol-
lowing manner:
1.
With engine running at operating speed, pinch neo-
prene breather line so that it is completely shut off.
2.
Hold tubing closed, for a period of not more than
20 seconds, and then release.
3.
If oil leak continues, repeat procedure after a 5
minute interval. If this does not remedy the condi-
tion; stop engine and take off valve inspection
plate. Remove breather and clean seats.
IGNITION SPARK
If difficulty is experienced in starting the engine or
if engine misses firing, the strength of the ignition
spark should be checked; remove spark plug and lay
it across the cylinder head. Turn engine over several
times by means of the rope starter sheave, as illus-
trated in
Fig. 9
, and observe the spark at the plug gap.
If a good strong spark occurs, the ignition system
can be eliminated as the source of trouble. If there is
Summary of Contents for Air Cooled TR-10D
Page 6: ...MI 937 2 4 Fig 1 289860C TAKE OFF rear and LEFT HAND SIDE VIEW of ENGINE...
Page 7: ...5 MI 938 2 FAN END front and RIGHT HAND SIDE VIEW of ENGINE...
Page 8: ...MI 939 2 6 SECTIONAL VIEWS OF ENGINE...
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Page 29: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...
Page 30: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...
Page 31: ...PARTS FOR ENGINE MODELS TRA 10D AND TR 10D...
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Page 46: ...WISCONSIN MOTOR CORPORATION MILWAUKEE WISCONSIN 532466 PRINTED IN U S A...