Tecumseh HM90 User Manual

Figure 5
PORCELAIN
-- AIR INTAKE SCREEN
(IF SO EQUIPPED)
Figure 6
.030 GAP
ELECTRODE
® SPARK PLUG (see Figure 6):
This spark ignition system meets all requirements of the Canadian
Interference-Causing Equipment Regulations. This engine complies with
all
current Australian and New Zealand limitations regarding
electromagnetic interference. Check spark plug yearly or every 100
operating hours.
A. Clean area around spark plug.
B. Remove and inspect spark plug.
C. Replace spark plug if electrodes are pitted, bumed or porcelain is
cracked. For replacement use Champion RJ-17LM only.
NOTE: A resistor spark plug must be used for replacement.
D. Check electrode gap with wire feeler gauge and set gap at .030 if
necessary.
E. Install spark plug, tighten securely.
MAINTENANCE (Continued)
® COOLING SYSTEM (see Figure 1 and Figure 5):
IMPORTANT: Frequently remove grassclippings, dirt and debris
from cooling fins, air intake screen and levers and linkage. This
will help ensure adequate cooling and correct engine speed.
B. DISCONNECT SPARK PLUG WIRE FROM SPARK PLUG AND
NEVER STORE ENGINE WITH FUEL IN
TANK INDOORS OR IN
ENCLOSED, POORLY VENTILATED AREAS, WHERE FUEL
FUMES
MAY REACH AN OPEN FLAME, SPARK OR PILOT
LIGHT AS ON A FURNACE, WATER HEATER, CLOTHES DRYER
OR OTHER
GAS APPLIANCE.
@ AFTER ENGINE IS STOPPED:
A. Close fuel valve if so e ui ed.
STOPPING
G) Move equipment control or any ignition stop switch on engine to "STOP"
or "OFF" (see equipment manufacturer's instructions).
® Push stop switch (if so equipped see Figure 1) located next to spark plug
on engine against spark plug and hold it
in this position until engine is
completely stopped.
STARTING (Continued)
® ELECTRIC STARTER:
A. Move choke lever (see Figure 3 or 4) to "FULL CHOKE POSITION".
NOTE: IF RESTARTING A WARM ENGINE AFTER A SHORT
SHUTDOWN, MOVE CHOKE LEVER TO
"NO CHOKE
POSITION".
B. Move equipment control (see manufacturer's instructions) or engine
control to "START".
C. Push starter button or turn ignition switch key (see equipment
manufacturer's instructions) to crank engine.
D. Crank engine until it fires. When it starts, release starter button or
ignition switch key and movechoke leverto"1/2 CHOKE" until engine
runs smoothly and then to "NO CHOKE POSITION".
If engine falters, move choke lever to "1/2 CHOKE" until engine runs
smoothly and then to "NO CHOKE POSITION".
NOTE: If engine fires, but does not continue to run, move choke
lever to "NO CHOKE POSITION" and crank engine until it
starts.
NOTE: If engine again fires, but does not continue to run, move
choke lever to "FULL CHOKE" and repeat instructions
B,
C and D until engine starts.
Page 3
MAINTENANCE
h WARNING: TEMPERATURE OF MUFFLER AND NEARBY AREAS
"MAY EXCEED 150"F (65OC). AVOID THESE AREAS.
G) OIL LEVEL:
Check oil level every five (5) operating hours and before each use. See
"FILL OIL SUMP OR CHECK OIL LEVEL" on Page 2.
® CHANGE OIL (see Figure 1):
Change oil after first two (2) operating hoursand every25 operating hours
thereafter, more often if operated in extremely dusty or dirty conditions.
Chan e oil while
en ine is still warm from recent runnin .
A. DISCONNECT SPARK PLUG WIRE FROM SPARK PLUG AND
KEEP IT AWAY FROM PARK PL G.
B. Clean area around oil drain plug (see Figure 1).
C. Position equipment so engine oil drain plug is lowest point on engine.
D. Remove oil drain plug and oil fill plug to drain oil.
E. Install oil drain plug and tighten securely.
F. Fill oil sump with recommended oil. See "OIL & FUEL
RECOMMENDATIONS" on Pages 1 and 2 and "FILL OIL SUMP OR
CHECK OIL LEVEL" on Page 2.
G. Install oil fill plug and tighten securely.
H. Wipe up any spilled oil.
@ AIR CLEANER:
IMPORTANT: NEVER RUN ENGINE WITHOUT COMPLETE
AIR CLEANER INSTALLED ON ENGINE.
A. TO SERVICE FILTER(S) (see Figure 7):
1. FOAM FILTER:
Clean and re-oil every three (3) months or every 25 operating
hours. Clean and re-oil daily ifused
in extremelydustyconditions.
NOTE: DO NOT OIL FOAM FILTER ON AIR CLEANER" A".
a. Wash in water and detergent solution and squeeze (don't
twist) until all dirt is removed.
b. Rinse thoroughly
in clear water.
c. Wrap
in acleancloth and squeeze(don'ttwist) until completely
dry.
d. Saturate with engine oil and squeeze (don'ttwist) to distribute
oil and remove excess oil.
2. PAPER FILTER:
DO NOT ATTEMPT TO CLEAN OR
OIL FILTER.
Replace once a year or every 100 operating hours, more often
if used
in extremely dusty conditions. Replacement filters are
available at any Authorized Tecumseh Service Outlet.
181-630-14

Tecumseh HM90 Specifications

General

Brand	Tecumseh
Model	HM90
Category	Engine
Language	English