Cummins/Onan — Fuel Hose Routing
Installation · fuel hoses
From a Cummins/Onan service manual covering: ES2075s, FS1870s, M11979s, M1976s, M1977s, M1978s. Check it applies to your exact model before use.
Applies to: Kubota 2482B engine
Before you start
- Electric sparks can ignite fuel; run electrical wiring and fuel lines as far apart as possible or separate them by physical barriers.
- Do not over tighten clamps or the hose could be damaged.
Procedure
- Measure the required hose length, allowing for movement of the power unit.
- Cut both hoses to length and mark one hose supply on each end.
- Install protective sleeving over both hoses, leaving 3 inches (76 mm) of exposed hose at each end.
- Secure the protective sleeving every 18 inches (457 mm) with plastic tie wraps.
- Route and connect the fuel supply hose to the power unit supply fitting and to the pickup supply line.
- Connect the return hose to the power unit return fitting and to the pickup return line.
- Secure fuel hoses to the bottom of the sleeper or tractor frame with plastic wire ties.
Tools required
- hose cutter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Leave 3 inches (76 mm) of exposed hose at each end
- Secure protective sleeving every 18 inches (457 mm)
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.