cushman industrial type c questions

bushman_22

I was given a cushman industrial type c 898547-7410. I don't know anything about these carts but would like to learn. I have figured out it is an 18 horse OMC with a 3 speed transmission, A PTO to chain drive the hydraulic pump for the dump box, and a 2 speed rear axle. The previous owner never had it running. I found a plug wire with the wrong terminal at the coil. also found it was out of time by a 1/4 turn of the distributor. Now I am able to feed a little fuel down the carb and get it to run for a few seconds. Now I am getting ready to clean the fuel tank and actually see if the pump and carb will operate. After steam cleaning the engine I noticed what looks to be a ballast resistor. I also noticed that at least one of the coils was internally resisted. Dow these use internally resisted coils or externally resisted coils? Also where would I find more info on this cart. And lastly where is a good place to find parts.

Bushman

BGW

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CharleyL

I'm not very familiar with Cushmans this early age, but I do know about the OMC motors. These motors use 2 standard coils and a ballast resistor connected in series to the timer (distributor) points. With only one set of points and the coild wired this way both spark plugs will fire every revolution, but only one cylinder will be on the compression stroke and fire. The other cylinder will be on the exhaust stroke and the spark does nothing. This type of ignition system is called a "lost spark ignition system" since both plugs fire, but only one lights the explosive mixture.

There are manuals online in .pdf format on the Jacobsen website www.jacobsen.com. You will need to enter your model number. If you don't find what you need, call them. They have more manuals than their website shows. Jacobsen once owned Cushman. OMC did as well, but you wont get any help from OMC. Or you can find some manuals containing OMC motor information for the 22 hp OMC motor which is the same motor but different cylinders and different centrifugal fly weights in the timer. The 22 hp version of the motor is otherwise supposed to be the same. Manuals for the 22 hp motor are on the www.sillylittlecars.com website, but the rest of this manual applies to a newer Cushman than yours. Look for the 898767 manual and it's supplement.

I've had the best luck getting motor parts from www.directparts.com, or www.denniscarpentercushman.com but you will likely need to call Dennis Carpenter at 1-800-763-4948 since their online listing doesn't show much yet. Ask for Duane. Ask him for a catalog while on the phone. They mostly carry restoration parts for Cushman Motor Scooters, but have parts for the OMC engines, since a one cylinder version of this OMC engine was made for a model of the scooters. Neither of these sources will be able to help much with other than motor parts, though.

These motors are quite reliable, but things do go wrong with them. On the bottom of each of the cylinders there is a sheet metal box with a bellows type assembly inside and a rod coming out the front. This rod attaches to a metal damper door that controls the air flow from the fan/flywheel to the cylinder. If this bellows fails to open the door the cylinder will overheat. The door should be closed or nearly closed with the engine cold and the bellows should be at it's minimum length. I have had so much trouble with these that I have now removed them and I installed a bolt through a threaded hole in the fan housing to lock each door fully open. Living in North Carolina where temperatures rarely go much below freezing has benefits, but I likely won't have much cab heat this coming winter. In your Northern climate you may need to keep these working properly.

The carburetors of these older motors will need rebuilding, especially if it has been sitting unused for several years. The float, gaskets, and rubber parts will all need replacing. Finding a source for carburetor parts can be challenging. I was able to get parts for my Keihin carburetor through my local forklift dealer. Forklift repair shops maintain many forms of industrial vehicles and can get many parts for these vehicles. If you can find the right parts catalog for your year and model truckster it will help when locating your needed parts, but don't rule out the auto parts stores, especially if they have an older parts guy who has been in the business for many years. The auto parts stores don't have a Cushman cross reference, but the experienced guys can frequently look at your part and find one that matches it. I did this with the front end ball joints, brake cylinder rebuilding kits, fuel filters, flexible brake lines, etc.

Your Cushman model number contains the date of manufacture. The first six digits are the actual model number. It is considered a "Turf Truckster", which was designed to meet the needs of landscapers and golf courses and it is likely an "Open Cab" although some have enclosed cabs and doors. The first two digits after the dash show the year and the second two show the month of manufacture, so yours was built in October 1974


If you have any other questions or can't find the part that you need please ask here. I'm not the only one who can help, but will if I see your post.

Charley

junkandcattle

try xtremedist.com If i remeber correctly they are in Oregon