Discussion:
Engine revolution switch

I have a Mazda powered lift with the Aisan fuel system that uses the engine revolution switch to control the fuel lock off valve. The engine starts and runs, but dies soon after because the switch is shutting off the fuel. One of my guys pulled the engine and did not mark any wiring or hoses... Right now its hooked up as follows:

Blue - Switched ground to solenoids
Yellow - Power in. also feeds + to solinoids
White - Chassis ground
Black - pulse signal from coil

I've tried swapping the switch with a known good spare and that did not help.

Thanks for any help
  • Posted 9 Nov 2017 04:36
  • By len_c
  • joined 9 Nov'17 - 1 message
  • Ct., -
Showing items 1 - 1 of 1 results.
You have the serial number of the truck...the diagram i am looking at dosent show any of those colors going to the revolution switch...it shows a pink/white and a brown/white that go to the shut off solenoid...shows a orange/black ground wire and a pink/black that goes to coil negative....if i have the serial nimber i can make sure i am looking at right schematic.....one i am looking at the serial number starts with E187
  • Posted 9 Nov 2017 09:59
  • By kevin_t
  • joined 2 Dec'10 - 1,301 messages
  • Pennsylvania, United States

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UN Forklift FBRP15NQZ2
HANGZHOU, Zhejiang, China
New - Sale
Enforcer FD50T-MMA
Braeside, Melbourne, Victoria, Australia
Hire
Global Industry News
edition #1252 - 16 October 2025
In this week’s Forkliftaction News , we report on the GEP Global Supply Chain Volatility Index which shows Asian supply chains are at their busiest since June 2022 while the US and Europe’s supply chains remain under-utilised. One of the report authors describes the situation as being “as stable as it’s going to get”... Continue reading
Movers & Shakers
Jim Tompkins Jim Tompkins
Chairman of the board, Tompkins Solutions
Director of government affairs, Associated Equipment Distributors
National dealer development manager, Castle Equipment Company
Sales operations, Heli