Troubleshooting Chart; Specifications - Cub Cadet HB425 Operator's Manual

TROUBLESHOOTING
PROBLEM
ENGINE WILL NOT START, IDLE OR ACCELERATE
Empty fuel tank
Primer bulb wasn't pressed enough
Old fuel (over 30 days)
Fouled spark plug
Air filter is plugged
Improper idle speed
Engine is over heated
ENGINE LACKS POWER OR STALLS
Old fuel (over 30 days)
Fouled spark plug
The outside temperature is above 90°F
SOLUTION
Fill fuel tank with fuel
Slowly press primer bulb 10 times
Drain gas tank and add fresh fuel
Replace or clean the spark plug
Replace or clean the air filter
Adjust according to the Idle Speed
Adjustments section.
Move the choke lever to Position 2, squeeze
the throttle control and pull the starter rope
until the unit starts. Run the unit for 2-5
minutes. Then move the choke lever to position
3.
Drain gas tank and add fresh fuel
Replace or clean the spark plug
Move the choke lever to Position 2, squeeze
the throttle control and pull the starter rope
until the unit starts. Operate the unit in Position
2.

SPECIFICATIONS

ENGINE*
Engine Type ............................................................................................................ Air-Cooled, 4-Cycle
Displacement ................................................................................................................................ 25 cc
Operating RPM ........................................................................................................................7,000 rpm
Idle Speed RPM ........................................................................................................ 3,200 – 4,400 rpm
Valve clearance ................................................................................ 0.003–0.006 in. (0.076–0.152 mm)
Spark Plug Gap .................................................................................................. 0.025 inch (0.635 mm)
Lubrication ............................................................................................................................. SAE 30 Oil
Crankcase Oil Capacity .............................................................................................. 2.03 fl.oz. (60 ml)
Fuel ......................................................................................................................................... Unleaded
Fuel Tank Capacity ............................................................................................................ 14 oz (414 ml)
Approximate Unit Weight (No fuel) ................................................................................... 11 lbs. (5 kg)
* All specifications are based on the latest product information available at the time of printing. We
reserve the right to make changes at any time without notice.
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