Cycle News - Archive Issues - 1970's

Busqvarna,CZ,Penton owners- have we got a . Mikuni carburetor conversion kit lor you. Valerian's kits are tested. They work. They fit. They substantially improve gas mileage, HP, and torque. • Stops loading up . Eases startups. And r .l gives more docibil ity. The kit that comes wit h a complete range of jets good from sea level to 8 .000 ~ The kit you can bolt on in less than an hour. The custom.odesigned kit that loo ks lik e it's " factory installed:' Order a who le kit and kaboodle. or just the parts you need. II nc ludin g our very own man ifo ld kits.) . Got a te chnical problem that needs expert ad vice? Send queries to "Ask E.G." c/o Cycle News. Your reply will app ear in the paper within a few weeks. Hard qu est ions m ay take a little longer to answe r. the frame), the spark can be tested by removing the spark p lug then pull the plug cap off of the plug. Now take an old p lug and break off the porcelain around the top of the plug, after you get it cleaned take a pair of side cutters and cu t th e co pp er wire part off. Now plug it bac k into the plug wire, now hold it 5 to 6 mm from the he ad (by the ru bber part o r y ou may ge t the shock o f your life ) an d kick th e engine over as fast as you can. The spark should jump that gap with n o problem. If you have to hold it closer to get it to sp ark o r th e spark looks weak, it's a pretty go od sign th at your Motopl at may be on its way out and th e only way then that you ca n be sure is t o tes t it with an Ohmmeter. If y our d ealer d oesn 't hav e o ne , y ou can remove the system from your bike and take it to an y local radio repair shop and they can check it for y o u. The Ohmmeter must have a testing capacity of 0 to 10,000 Ohms. Call (213) 475-4541 today Checking The Ignition Coil Or mail the coupon . Step 1. Pull b oth flat terminals off the ignitio n coil and unscrew the sp ar k p lug ca p from the ignition cable. Step 2 . Co nn ect the testing leads of the Ohm meter to both flat terminals of the ignition coil. If this measuring operation indicates a resistance of 20 to 3 0 Ohms, th e electronic sy stem is in order. 1£ the read ing is zero or close to zer o , th e coil is defective. Fig. No. I. PRICE 1 2 250 CZ~2 m m 250 CZ 34 mm PRICE 554.95 $59 .95 17 18 125 Penton 32mrn $54.95 125 Pe n Ion 30 mm •... ....•.. . 554 .95 $59.95 19 125 Penton 28mm 3 •... 360-400 CZ 34m m 4 360~400 CZ 36mm 5 $54.95 250 250 250 360 360 .. ... . ....•. $72 .95 20 175 Penton 32mm $59.95 Husky 32 to rep l ace 32 $61.95 21 175 Pent on 34mm , . . . . . , $65.95 6 Husky 34 to rep l ac e 36 $65.95 22 125 CZ 32mm . . . . . . . • . . .. . • . $54.95 7 Hus ky 32 to repl ace 36 $61 .95 23 125 Hus ky 32mm •••• . .•. ... . . $62.95 $61.95 24 360 Husky 36 to replac e 36 $72.95 8 Husky 32 10 replace 32 $65.95 25 360 Husky 38 10 repla ce 36 $75.95 9 Hus ky 34 to rep la ce 36 to 360 Husk y 32 to repl ac e 36 $65.95 26 400 Husk y 36 to replace 36 $72.95 27 400 Husk y 38 to reptece 36 $75.95 11 400 Hu sky 34 10 rect ec e 32 .... $65.95 M K 36mm $72.95 12 400 Hus ky 34 to re pla c e 36 $65 .95 28 400 Husky MJ MK 32mm $63 .95 29 400 Husk y MJ M K 38mm $75.95 13 250 Husky MJ 14 250 Husky MJ MK 34mm . . . . $66.95 30 450 Husky MJ MK 36mm $12.95 400 Husky MJ M K 34m m ...• $65.95 31 450 Husk y MJ MK 38mm $75.95 15 16 450 Husky MJ M K 34mm ..•. $65.95 32 400 CZ 38mm ••.. . . .••.• .•• . . $75.95 Speci al super teflon smooth cables are avai lable for $3.85 and a M ik uni tun ing lnl o rmat ion bo oklet lo r $2 .20 . Please in c lude a $3.00 shipping & han dl ing fee . Cal ifornia res id ents add 5% + + + + + + + + sales tax. Please ShI p COO 0 NAME M y ac coun t number 1$ M AIL TO : _ AOORESS Charoe 10 BankAmenc ard 0 M aste rCharQe 0 _ CITy .~ A •{II"; vu~Jttt ~ II)) STATE ZIP _ TELEPHONE (use area code) ~w~!c~!!ov~!!~~"!:td. La. Angel ... Cal ifornia;0Q&4 - Telephone: (213) 475-4s,c1 sales - sarvlce - Accessories - Parts - Rlvetts Champion Leathers SCUDERIA HUSQVARNA PENTON LA VERDA SALES. SERVICE ", AND MAIL SPECIALISTS (223) 542-1695 R eceive $50 Worth of Parts and Accessories FREE When You Buy a New Husk y or Penton. 2419 Artesia Blvd . Redondo Beach, Californ ia 90278 Walk before you run Mickey QuadeTibblin Then let Rolf and im prove your dirt~iding skill tu ne your boo. Begin ne rs to pros. All makes of bik es ac cepted - rentals available. Tuition fee of $175.00 covers all. Contact: lEO Husqvarna International Training Center 933 So. Santa Fe Ave.. Vista, CA 92083 714·724-8091 H and Washa ble _ §~~r 22 ~ " . . .' . ~; ~~ O t hman O'Slftt!ullng Co . 18 2 2 7 L uOlo...... 51. N or lh"Clge , C.a. <} J 3 24 Dealer Bing & Motoplat Checkout I have a 1972 Pen ton 125 cc Six Day and w hen I ' m going ove r uih o op -de e -d o o s my bike stalls momen t a rily so metimes (like it's running ou t of gas fo r just a second) th en it catc hes back up and is fine . It's also hard to st art. If I tow it fo r a ways it will start. It has th e stock Bing carb and I have rep laced the needle valve. Everything is set at factory specs. What is the pro blem ? Is it gas, or possibly a short? It runs fin e except fo r th ese two things. A l White Jack so nville. Fla. HUSQVARNA' JAWAlCZ · SUZUKI· PENTON The Finest Selection of Parts and Accessories For Bike and Rider We Offer Expert Repairs Porting and Competition Tuning Secrets of the Motoplat revealed and those of the' Bing needled • Ri ding " Racing " Street GLOV ES InQUlrl", ~ In vit eo (2131 3 6 3 ·623 0 I think you have two p roblems. Firs t let's square away the carb o Loos en the carb and pop off th e b owl o f th e carb, rem ove the pilot jet (it 's right behind th e main jet wa y up there in th at little hole) and rep lace it with a 45. No w rem ove the m ain jet h old er, (tha t 's the brass pie ce th at the main j et screws into) No w reac h up an d pop t he twi st grip a coup le o f times an d the needl e jet will fa ll o ut , repl ace thi s jet wi th a 276 needl e je t. Be sure thai yo u install the needle jet ba c k into th e carb wit h the little end up. No w put yo ur main j e t holder back in and start off wi th a No . 13 5 to 15 0 main jet , check y our float level and be su re t ha t th e float arm is parallel with th e base of th e ca rb o Pop the bowl b ack on an d tu rn th e carb back into pl ace. Now set y o ur air sce w ou t 'A turn (small-body Bings don't like to hav e t his screw out very far ). Thi s will have the car b close enough to run good and you can fin e tune it later. Second spot of trouble may be in the spark department. Your Penton is equipped with a Motoplat electronic ignition system. A word of warning to all you riders who have this typ e of ignition system in your b ike ; T here are three thi ngs that you must reme mber or you will b low your Motoplat. I. NEVE R, NE ER attem pt to kill the engine by removing the spark plug wire. Never kick the engine over to test the spark without first grounding the spark p lug wi re or attaching to a grounde d spark plug. 2. It's tr ue that t he primary side of the unit (bottom part) has a degree of immuni ty to water, but th e case should be sea led up and kept as dry as possible. 3. The secondary side (coil und er the tan k wh erever it is) is q uite like that of a co nventional system and you use all p recautions to have it mounted good, wi th a good ground, and if runn ing in wa te r, waterproof it. Now there are two ways to check and see if the Motoplat is bad. A simple check is (having made sure that the cables are well co nnec ted and tha t the support of the coil is well grounded to Figure 1 Step 3. For test ing th e secondary winding of th e coil. connect one testing le ad of t he Ohmmeter to th e gro und , t he o ther to th e ignition wir e (wi thout th e spark plug cap on it). 1£ th e resist ance is 7,000 to 9, 00 0 O h ms, th e secondary wi nding is okay. Fig. No.2. Figure 2 Figure 3 Check The Stator Plate Step 4. Connect one testi ng lead of th e Ohmmeter to the ground o r the base of the stator an d the other one to the blue wire. Re peat th is meas uring operat ion wi t h interchanged connections. If th e

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