Max FAQ

If the vehicle has an original engine that was 340cc or smaller, the long final drive chains are #40, 125 pitches. If it has a larger engine, RI would have used #50 chains on the final drives, 102 pitches. The short chains coming off the jack-shafts are a mix of #50 (46 pitch) and #60 – #60 is the vertical chain. The number of links on the #60 chain varied – RI had various sprocket/gearing options back then.

When a MAX ATV is veering in one direction constantly, the usual suspect is unequal tire pressures resulting in one or two tires being over-inflated, and therefore larger, than the tires on the opposite side, which effectively changes the gearing on one side of the vehicle.

First make sure your pressures are all equal. If the veering is still present, then take a flexible measuring tape and measure the outer circumference of each tire – you may find one is stretched out and slightly bigger than the others. You will then have to compensate by adding a little air pressure to the other tires in order to make them all equal size.

There is no transmission adjustment per-se that controls veering tendencies – but it is possible the brake bands are out of adjustment making lever travel throw or required force on the levers unequal, so I have attached the brake band adjustment instructions for your transmission. I have also included the T20 transmission manual for further reference.

I believe these 2 documents should help you convert your older-style 5-pin ignition switch to the current 7-pin ignition switch.

The document makes reference to the newer style being 6-pin, but I believe it was called a 7-pin if you counted the ground terminal.

7 Pin Wiring

Here are the original RI MAX II and MAX IV installation instructions for the WARN winches. Note these instructions cover the installation of the brackets/winch plates in detail, and give an overview of the wiring, but they also refer the reader to the Warn Winch booklet that used to come separately with WARN winches for more wiring detail. Apparently the two sets of instructions were intended to be used together.

We have posted a record of build dates by serial number here.

R.I.M. was vehicle built for 3 years in the 1970’s and was the precursor to the MAX IV, and looks much like it. R.I.M. stood for “Recreational, Industrial, Military” as it was marketed to those segments. The big letters “R.I.M.” are embossed right in the plastic body, between the headlights, so its identification is unmistakable.  The design of the vehicle was a collaboration between Recreatives Industries and an Attex designer who was on the Recreatives payroll for about one year in 1974 or 1975.  Recreatives subsequently made some changes to the design and badged it MAX IV.