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PRODUCT SPECIFICATIONS
MODEL NUMBER 917.377631
SERIAL NUMBER
DATE OF PURCHASE
HORSEPOWER: 6.75
DISPLACEMENT: 12.56 CU. IN.
GASOLINE CAPACITY/TYPE: 1.25 QUARTS
UNLEADED REGULAR
OIL TYPE (API-SF/SG/SH): SAE 30 (ABOVE 32°F)
SAE 5W,,30 (BELOW 32°F)
OIL CAPACITY: 20 OZS.
SPARK PLUG(GAP: .030") CHAMPION RN4C
VALVE CLEARANCE: INTAKE: .004 - .008
EXHAUST: .004 - .008
SOLID STATE IGNITION
AIR GAP: .0125 IN.
BLADE BOLT TORQUE: 35-40 FT. LBS.
• The model and serial numbers will be found on a decal attached to the rear of the
lawn mower housing.Record both serial number and date of purchase in space
provided above.
.AWN MOWER
Always observe safety rules when performing
any maintenance.
TIRES
• Keep tires free of gasoline,oil, or insect
controlchemicals which can harm rubber.
• Avoid stumps,stones, deep ruts,sharp
objects and other hazards that may cause
tiredamage.
BLADE CARE
For best results,mower blade must be kept
sharp. Replace bent or damaged blades.
TO REMOVE BLADE
• Disconnect spark plug wire from spark plug
and place wire where itcannot come in
contactwith spark plug.
• Turn lawn mower on itsside. Make sure air
filterand carburetor are up.
• Use a wood block between blade and
mower housingto prevent blade from
tumingwhen removing blade bolt.
• Protectyour hands with gloves and/or wrap
blade with heavy cloth.
• Remove blade boltby turningcounter-
clockwise.
• Remove blade and attaching hardware
(bolt,lockwasher and hardened washer).
NOTE: Remove the blade adapter and check
the key inside hub of blade adapter. The key
must be in good conditionto work properly.
Replace adapter ifdamaged.
TO REPLACE BLADE
IMPORTANT:
treated.
• Position the blade adapter on the engine
crankshaft. Be sure key=in-adapterand
crankshaft keyway are aligned.
• Positionblade on the blade adapter aligning
the two (2) holesin the blade with the raised
lugson the adapter.
• Be sure the trailingedge ofblade (opposite
sharp edge) isup toward the engine.
• Installthe blade boltwiththe lockwasher
and hardened washer intoblade adapter
and crankshaft.
• Use blockofwood between blade and lawn
mower housingand tightenthe blade bolt,
tuming clockwise
The recommendedtightening torque is 35-
40ft. Ibs.
Blade boltisgrade_8heat
11