If this is your first experience at engine service, it may be more worthwhile to have the checks made at a dealership. After the snap ring is installed, make sure it is completely seated in its groove. A puller can be ordered through Arctic Cat dealers. While the following list may look exhaustive, it can be performed rather quickly after you be- come familiar with it. If necessary, place a socket on the inner bearing race and tap the bearing into place. Ifyou are properly equipped for your trip, you can tum any undesirable area into a suitable campsite.
Thread two nuts onto the damaged stud. A threadl~ck will lock fasteners against vibration loosenmg and seal against leaks. Because both coarse and fine threads are used for general use, it is important to match the threads correctly so you do not strip the threads and damage one or both fasteners. In- dustrial arts instructors sometimes welcome outside work that can be used as practical shop applications for advanced students. A carburetor is best cleaned by disassem- bling it and cleaning the parts in hot soap and water.
These include grease, oil, gasket cement, shop rags and clean- ing solvents. Repairs go much faster and easier if your machine is clean before you begin work. A piece of thick, flat metal or plate glass can sometimes be used as a surface plate. The machined surfaces of the cylin- der head, crankcase and other closely fitting parts may require a very good quality surface plate to smooth nicked or damaged surfaces. Bolts Commonly called bolts, the technical name for these types of fasteners is cap screw. Incorrect or mismatched fasteners can result in damage to the snowmobile and possible personal injury. An outside micrometer must be used together with the tele- scoping gauge to determine bore dimensions.
Needlenose pliers are used to hold orbend small objects. Nuts, bolts and screws are manufactured in a wide range of thread patterns. As the piston travels downward, a transfer port A between the crankcase and the cylinder is uncovered. If the belt appears worn or damaged, replace it. It is often necessary to know the specific snowmobile or engine model for selecting the correct special tools.
Do not wrap the strap around the clutch tower or per- sonal injury may occur when attempting to start the engine. Ifthe end ofthe strap shouldfall into and engage with the rotating clutch or drive belt, personal injury to yourself or damage to the clutch or drive belt assembly may result. Screwdrivers The basic screwdriver, ifit is used improperly, will do more damage than good. Degree Wheel A degree wheel Figure 44 is a specific tool used to measure parts of a circle and angles. When making these measurements, the degree of accuracy will dictate which tool is required.
A tube of Loctite 271 red , two nuts, two wrenches and a new stud will be required during this procedure Figure 67. The left and right sides refer to the position of the parts as viewed by a rider sitting and facing forward. Apply it liberally and let it pene- trate for 10-15 minutes, then tap the fastener several times with a small hammer. There is no satisfactory substitute for this tool. Ask your dealer for the special locking compounds, silicone lubricants and lube. It is wiser to have these operations performed by a shop equipped for such work, than to try to do the job yourself with makeshift equipment that may damage your machine. I rode it for a few minutes today, but then it died.
Prying is generally the easiest and most effective method of removing a seal from a housing. Grease is an oil to which a thickening base has been added so that the end product is semi-solid. Groove-joint pliers known by the brand name Channelock can be adjusted to hold various sizes of objects such as pipe or tubing. Pounding on a plas- tic-handled screwdriver is a sure way to destroy the tool. Tum the bottom nut counterclockwise and unscrew the stud. If installing a bearing in a housing, pressure must be applied to the outer bearing race Figure 72. An adjustable wrench Fig- ure 33 is best used as a backup wrench to keep a large nut or bolt from turning while the other end is being loosened or tightened with a proper wrench.
Screw Pitch Gauge A screw pitch gauge Figure 51 determines the thread pitch of bolts, screws and studs. You may be within a short distance of help. Driving the bearing into the housing using normal methods may damage the housing or cause bearing damage. Do not install new bearings by driving on the inner bearing race. The oil must function properly in the high oper- ating temperature associated with two-stroke en- gines, as well as flow freely in cold temperatures. Never use a screwdriver for prying or chiseling metal. Loctite 242 blue is a medium strength threadlock for general purpose use.
Always install new snap rings during assembly. Each plate has a thread shape cut on one edge to match one thread pitch. They are usually made ofinfe- rior material and are thick, heavy and clumsy. If possible, repair your snow- mobile so you can drive to safety. Starter Pulley Holder A universal type holder Figure 57 or the universal Grabbit Figure 58 can be used to hold the recoil starter pulley during removal and installation. Select a socket that fits the seal's outer diameter properly and clears any protruding shafts.
If you ignore these rules you can hurt yourself or damage the equipment. It is frequently possible to perform the preliminary operations yourselfand then take the defective unit to the dealer for repair at consid- erable savings. To clean or repair spark plug threads, a spark plug tap can be used. Follow Loctite's directions on cure time be- fore assembling the component. During this discussion, assume the crankshaft is rotating counterclockwise as in Figure 8.