Answer
IMER's product sheet says you can choose a 2L6, IM25L, 60.12 or L7 rotor and stator to make use of the 7.5 hp motor. The parts book lists the 2L6 set in its pump kit drawing 16 as stator 1107077 and rotor 1107078, and an IM25L set (1107110 and 1107111) in the pump group drawing 3. A drop in flow to the jet may mean a worn pump. Empty and clean the machine, remove the vibro-screen or grid, tilt the machine with the manifold up, undo the tie-rod screws, and remove manifold, screw and stator. Use IMER lubricant spray to assemble; never mineral oil or grease.
Source
- IMER Step-Up 120 product sheet (2025-3) · page 1
- IMER Step 120 operating, maintenance and spare parts manual (3226875 R16, 09/2018) · page 35
- IMER parts book, Step-Up 120, drawing 16: Pump Kit 2L6 (1107088) (3226875_r16__2018_09__step_120.pdf) · page 97
- IMER parts book, Step-Up 120, drawing 3: Pump Group (3226875_r16__2018_09__step_120.pdf) · page 69
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Reviewed by our parts specialists from IMER manuals and parts books. Check the part number on your machine or in its parts book before you order. Not sure? Ask a parts specialist.