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Users Manual

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To the new owner of a Raket 85

kart engine

Please read the following two pages. It will take you perhaps 15

minutes, but it can save you a lot of aggravation and money in the

future.

We congratulate you to your new Raket 85 engine. We hope you

will have a lot of fun with it.

This engine is especially developed for the two junior classes

Micro and Mini, for drivers 10-12 and 12-15 years of age.

When you read the following pages you will ﬁnd numbers that

refer to the exploded view on page 19. Numbers in the text with

six digits are spare part number engraved into the part in question.

All four digit numbers are our own part numbers. See the spare

parts list on page 18.

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Содержание Raket 85

Страница 1: ...Radne Motor AB Users Manual English ...

Страница 2: ...p a few things on how to maintain and service the engine You can always ﬁnd an updated version on this manual or other things that could be of interest at our Raket website http www radne se raket Radne Motor AB Radne Motor AB was founded in 1967 by Leif Radne to produce and sell engines and parts for go kart Today almost 40 years later it is still main business concept of the company We have now ...

Страница 3: ...y young drivers This engine has rope start centrifugal clutch and forced air cooling It can be equipped with catalytic emission control and a rev limiter Raket 85 is the most popular and most produced Raket engine It is used in many countries for the youngest drivers Often the same engine is used with some type of power restrictor for the youngest and later with the restrictor removed for the more...

Страница 4: ...gine We hope you will have a lot of fun with it This engine is especially developed for the two junior classes Micro and Mini for drivers 10 12 and 12 15 years of age When you read the following pages you will ﬁnd numbers that refer to the exploded view on page 19 Numbers in the text with six digits are spare part number engraved into the part in question All four digit numbers are our own part nu...

Страница 5: ...tightly surrounds the beginning of the conical part of the mufﬂer This is very important The Raket 85 kart engine is homologated with the mufﬂer 3012 in the Mini class and with the mufﬂer 3140 in the Micro class Between the mufﬂer 3012 and the exhaust pipe 3132 you must use a ﬂexible hose our number 3010 The length of this ﬂexible metal hose is important One part of adjusting and tuning your kart ...

Страница 6: ...ou can run the engine with this setting as long as you practice to get used to the engine and the kart You can lower your lap times with some tenths of a second if you screw the H needle clockwise this gives leaner fuel mixture BUT YOU MUST NEVER CLOSE IT MORE THAN TO A TURN OPEN If you close the H needle you MUST open the L needle to enrich the mixture at low revs Let us say L needle will be 2 5 ...

Страница 7: ...ed outboard oil The engine can also run on 2 stroke oil intended for extremely low mixture normally 1 per cent But if you use such oil you must be very careful when you mix fuel and oil This is the reason why we recommend this type of oil only if you get it in small packages ready to be mixed with 5 or 20 liters of fuel Ready to use oil in such small packages is available for the Raket engine from...

Страница 8: ... the crankcase varies it will move the pump mem brane up and down On the other side of the membrane in the other chamber is the fuel When the membrane moves it pumps gasoline in and out of the chamber Two small valves are punched out from the same piece of rubber as the pump membrane and they now act so that fuel is sucked from the fuel tank and pumped into the main carburettor The pump shall give...

Страница 9: ...forces the lever to open the needle valve Now more fuel comes in from the pump side of the carburettor The membrane moves upwards and the lever can close the valve This is how the carburettor keeps a steady level of fuel From the chamber under the membrane the fuel goes through the H and L needle valves to the venturi of the carburettor The chan nels are so thin that the fuel does not pass through...

Страница 10: ... needles are OK the carburettor works The only problem that can remain now is if the engine is very dif ﬁcult to start and don t react on adjustments of the L needle Then there could be dirt under the expansion washer which is located under the main membrane The fuel that passes the L needle is also passing a small chamber on its way to the venturi In very rare cases this chamber can be blocked To...

Страница 11: ...p when the dial shows 2 5 2 7 mm before top dead centre At this point the ignition system shall generate a spark Look at picture to see the correct position of the ﬂywheel in relation to the ignition unit Between 2 5 2 7 mm before t d c The engine gives its best per formance But if the ignition points isn t correct what to do You have to dismount the ﬂywheel and adjust the ﬂywheel key You machine ...

Страница 12: ... al lowed The part of the crankcase which is closest to the drive sprocket must also remain unchanged with the exception that is accept able to make necessary modiﬁcations at the outside in order to be able to ﬁt a suitable guard over the sprocket and chain The sealing rings are free i e you can change the make as long as the type and the size remain the same On the sprocket side there must be a 1...

Страница 13: ...ston crown are except for the name of the manufacturer an A with an arrow showing which side that must face the exhaust port Further on the original pistons you may ﬁnd a classiﬁcation letter where A indicates the smallest diameter and B C etc indicate larger diameters The pistons which are sold as spare parts may not have any clas siﬁcation letter at all but all spare parts pistons are class AB a...

Страница 14: ... system is of a transistorized type and is especially developed for Raket 85 It must not be changed against any other type or make of system It is further forbidden to move the ignition system from its original position The ﬂywheel must be original Raket 85 but there may be several different original types See homologation sheet for more informa tion och local rules Note Apart from the fact that i...

Страница 15: ... and diameter 13 The exhaust mufﬂer It is accepted to connect the mufﬂer directly to the exhaust pipe without using a ﬂexible hose For class 10 12 years of age the original mufﬂer 3140 and the spacer 3127 are compulsory For the class 12 15 years of age the original muf ﬂer 3012 must be used 14 The chain sprocket The number of teeth on the sprocket is free The sprocket must be fastened to the shaft...

Страница 16: ...16 Users Manual 16 Service Date Description ...

Страница 17: ... ﬁtting 3031 High speed mixture screw 3032 Spring 3033 Ball 3034 Spring 3035 Low speed mixture screw 3036 Spring 3037 Screw 3038 Trottleshaft 3039 Bushing 3040 Spring 3041 Control plate 3042 Filter small 3043 Filter 3044 Screw 3045 Diaphragm 3046 Gasket 3047 Pump cover 3016 3017 3041 3018 3022 3023 3024 3025 3026 3020 3019 3014 3013 3015 3028 3029 3030 3045 3046 3047 3044 3038 3037 3036 3035 3032 ...

Страница 18: ...ankshaft 3093 Bearing SKF 6203 3095 Key 3096 Sprocket nut 3097 Engine sprocket 11 K 3098 Engine sprocket 10 K 3099 Oilsealing sprocket side 3115 Oilsealing ignition side 3115 1 Oilsealing ignition side teﬂon 3116 Flywheel 3127 Exhast ﬂange 3132 Exhaust bend 3140 Silencer box model 3140 1 Silencer box catalytic converter 3150 Crankcase 3151 Crankcase gasket 3158 Rubber bushing 3161 Carburettor ﬂang...

Страница 19: ...Users Manual 19 ...

Страница 20: ...Radne Motor AB Box 3035 136 03 Haninge Sweden Tel 46 8 556 506 90 Fax 46 8 556 506 91 info radne se http www radne se ...

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