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