Cummins/Onan G1250s / M-1902s — Exhaust System Installation
Installation
For the Cummins/Onan G1250s / M-1902s, from the Cummins/Onan service manual.
Applies to: Cummins/Onan HDKA, Kubota V1305-B engine
Before you start
- Do not use flexible exhaust tailpipe.
- Do not mount any portion of the exhaust system into the approach or departure angle unless adequately protected.
Procedure
- Connect the exhaust pipe (1.5-inch I.D., installer-supplied) to the genset.
- Do not terminate the exhaust tail pipe under the vehicle.
- The exhaust tail pipe must terminate 1 inch (25.4 mm) beyond the side or end of the vehicle.
- Support the tail pipe as close to the outside of the vehicle as possible.
- Install elbow on downpipe, then turn muffler onto the elbow with the cleanout plug facing downward.
- Attach tailpipe to muffler with a U-bolt type exhaust system clamp and hanger.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Use 1-1/2 inch (38.1 mm) I.D. 18 gauge rigid steel tubing for tailpipe
Full service-parts list: Cummins/Onan HDKA →, Kubota V1305-B engine →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.