TroubleShooting
Problem
Engine Will Not Start
Engine Will Not Idle
Engine Lacks Power or Stall
When Cutting
If further assistance is required, contact your local authorized Maruyama service dealer.
Specifications
Weight(lbs.)
Engine Displacement
Anti Vibration
Carburetor
Ignition System
Fuel Tank Capacity(qts.)
Gas to Oil Ratio
Spark Plug
Spark Plug Gap
EPA and CARB Approved
Emission durability of 300 hours.
*1. Dry weight without Fuel, Blade and Strap.
Maintenance Period
Check and replenish fuel
Check for fuel leakage
Check bolts, nuts and screws for tightness or missing
Check engine idle speed adjustment
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Clean air filter element
Clean spark plug and adjust electrode gap
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Remove dust and dirt from cylinder fins
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Clean spark arrester
Tighten bolts and nuts
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Remove carbon deposits in exhaust port
Replace fuel filter
Remove carbon deposits on piston head and
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combustion chamber
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Remove carbon deposits in transfer ports
Replece fuel tube, fuel tank cap gasket
● : Service to be performed by an authorized Maruyama engine dealer. ■ : Service more frequently under dusty conditions.
NOTE:The service intervals indicated are to be used as a guide.Service to be performed more frequently as
necessary depending on operating condition. Use Maruyama standard 50:1 two-cycle engine oil.
STOP switch set to off position
Empty fuel tank
Primer bulb wasn't pushed enough
Engine flooded
Idle speed set incorrectly
Throttle wire has come loose
Dirty air filter
Clogged spark arrester or exhaust port
(lbs.)
(cm3)
(qts.)
(in.)
Maintenance
Cause
BT23L
*1
10.9 (5.0kg)
22.5
Engine mount
Walbro Diaphragm Type
Solid State
0.63 (0.6l)
50:1
NGK BPM8Y
.024 -.028 (0.6 - 0.7 mm)
Phase3, Tire 3
Daily
Every 25 hours Every 50 hours Every 100 hours
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It is recommended to replace every 3 years
− US-20 −
Action
Move switch to on position
Fill fuel tank
Press primer bulb until fuel flows
through fuel return line
Use warm engine starting procedure
Set idle speed
Tighten throttle wire
Clean or replace air filter
Clean spark arrester or exhaust port
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