DEK 4550Pro, Owner'S Manual

Page: 15 / 16

DEK® is registered trademark of GXi Outdoor Power, LLC Clayton, NC 27520 USA.
No part of this publication can be printed or copied without written permission.
15 of 16 Rev. 1/2010
Heavy Duty Power Equipment
4550 Pro, 5650, 6500(EL), 7550 Pro
Troubleshooting
Heavy Duty Power Equipment
Symptom: Engine runs and volt meter shows 240VAC and 120VAC, but no power goes to connected devices
Potential Causes Check / solution Recommendation
Bad extension cord/power strip Try different / shorter extension cord or a different power strip
Device failed Try a different light bulb or device
Push button breaker tripped Push button breaker tripped
GFCI tripped Push the red reset button very deep/firmly
GFCI failed Replace GFCI with any GFCI or household outlet Call DEK for parts/service
Broken wire Call DEK for parts/service
Toggle switch failed Call DEK for parts/service
Symptom: Engine runs, volt meter shows 120VAC in 120V mode, but 120VAC or 0VAC in 240V mode
Potential Causes Check / solution Recommendation
Circuit breaker failed Call DEK for parts/service
Toggle switch failed Call DEK for parts/service
Alternator phase has failed Call DEK for parts/service
Broken wire Call DEK for parts/service
Symptom: Voltage too high/low
Potential Causes Check / solution Recommendation
Spark arrestor Remove, clean and replace.
Voltage not measured correctly Voltage must be measured between hot and neutral, not hot and ground, the ground is isolated
Speed screw bent Call DEK for parts/service
Symptom: Voltage is 120 VAC on 1 phase but too high/low on other phase
Potential Causes Check / solution Recommendation
Alternator phase has failed Call DEK for parts/service
Symptom: Engine oil leaking
Potential Causes Check / solution Recommendation
Oil leaking from crankcase gas- Tighten crankcase bolts
Oil leaking from shaft Oil seals failed Call DEK for parts/service
Symptom: Oil leaking from Valve head cover
Potential Causes Check / solution Recommendation
Bolt not tight Tighten bolts
Symptom: Fuel leak at tank shut-off
Potential Causes Check / solution Recommendation
Shut-off valve loose Tighten nut on shut-off valve/replace shut-off valve Call DEK for parts/service
Symptom: Fuel leaking out of carburator
Potential Causes Check / solution Recommendation
Fuel drain screw loose Tighten fuel drain screw
Carburator float seat not seating Flush with clean fuel
Symptom: Cannot turn engine with recoil
Potential Causes Check / solution Recommendation
Recoil ratchets have broken Call DEK for parts/service
Recoil is crushed in Call DEK for parts/service
Alternator bearing has failed Call DEK for parts/service
Head valve timing is off Call DEK for parts/service
Symptom: Fuel gauge leaks
Potential Causes Check / solution Recommendation
Replace fuel gauge gasket Call DEK for parts/service