Dolmar PB-250.4 User Manual (English)

Questions and Answers:

A
adawsonJul 30, 2025
How to fix Dolmar PB-250.4 when engine does not start?
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  Robert SmithJul 30, 2025
  If your Dolmar Blower's engine isn't starting, several factors could be at play. Ensure you're operating the primer pump correctly by pushing it 7 to 10 times. A lack of fuel could be the issue, so replenish the fuel supply. Also, check for a clogged fuel filter and clean it if necessary. Deteriorated fuel can also make starting difficult, so replace it with fresh fuel, ideally every month. If there's excessive fuel suction, set the throttle lever from medium to high speed and pull the starter handle until the engine starts. If it still won't start, remove the spark plug, dry the electrode, reassemble it, and try starting again. Other potential causes include a detached plug cap (attach it securely), a contaminated spark plug (clean it), or abnormal spark plug clearance (adjust it).
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Mr. Mark ShannonAug 8, 2025
What to do if my Dolmar Blower engine stops soon after starting?
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  Cassandra KrauseAug 9, 2025
  If your Dolmar Blower engine stops shortly after starting, it might not be sufficiently warmed up, so perform a warm-up operation. Check that the choke lever isn't set to “CLOSE” when the engine is warm; if it is, set it to “OPEN”. A clogged fuel filter or a contaminated air cleaner could also cause this issue; clean them accordingly. Also, check if the throttle wire is detached and attach it securely.
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Mr. John ColemanAug 20, 2025
Why my Dolmar PB-250.4 Blower engine does not stop?
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  Kenneth MirandaAug 20, 2025
  If the Dolmar Blower engine won't stop, check for a detached connector and securely attach it.