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New Product Service Information Manual 201 January 1972
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W EMISSION CONTROL MAINTENANCE 0 13 U 1 ll i EMISSION CONTROL SYSTEMS THE FEDERAL CLEAN AIR ACT stipulates that it is l unlawful for any person to remove or render inoperative any device or element of design on a motor vehicle in ucsc wusTtRTOcARs compliance with regulati0ns A further provision stipulates th tC tl1e mareufacturer shall furnisgh with each new motor WISE ir ve i e written instructions or themaintenance and K 44 use of the vehicle or engine by the idtimate purchaser as IE a may be reasonable and necessary to assure the proper s J t functioning of emission control devices and systems l r n TQ Tfhe Required Emission Control Maintenance Chart az L5 f tg j spec ies Maintenance Service that is to be done at certain gr 7 1 T s intervals The chart also has provision for the seniors gigs r dealer to write in the date and mileage each service was Pmm N3 5 N performed The chart wil be in a separate booklet in every cmmgm Qty ii car Receipts covering he perfor mance of regular iepaission mamtenance should be retained by the owner in the event QQW questions arise concerning maintenance These receipts x sltoiald be transferred to each subsequent owner of the car peration under conditions such as heavy dust l continuous short trips use of other than un leaded or low lead fuels or pulling trailers is not considered normal use and therefore more frequent maintenance will be required Fig 0 I 7 Fuel and Emission Pipes A Body l Such additional maintenance re uirements are included r Cl b l when aPPh b1 element and enrichment of carburetor mixture Under these v conditions the element must be replaced more frequently i Carburetor Air leaner Element i Under nomial operating conditions the carburetor air hermostatically Controlled Air Cleaner I cleaner element should be replaced every 24 000 miles The air cleaner should be inspected to make certain that Operation of mr in dusty areas wil cause rapid clogging of all hoses and ducts are intact and correctly installed Operational function should be checked by inspecting position of valve in air intake With engine stopped valve should be open At underhood temperature below 100 F with engine running valve should be partially or fully l FRGMFUSEPANH 7p my TOWNSWSSIDN closed As engine underhood temperature rises the valve r 4 74 should open nmsnc aacruv swim l Choghk ch shuldb hckedf f oe me anism o ece or ree I g rwhE E R operation A binding condition may have developed from r 75 Ia t petroleum gum formation on the choke shaft or from r S EN i Ev I it I damage Choke shafts can usually be cleaned without Q disassembly by using a Carburetor and Combustion i jg gg g sotmow Chamber Conditioner or equivalent r t r p vnvr e yr e Q xi Nuts Carburetor to Manifold Q Carbmetor attaching nuts should be carefully adjusted vim K altimusm to correct torque to compensate for compression of gasket 2 P at first 4 months or 6 000 miles of operation s ronnsninsuros gl Filter Carburetor V U M V N BALLCHECK A clogged carburetor filter may restrict fuel flow V Replace clogged filter r lr in ilihihilirrrr s M3 SP d i WM se o ea ed fuels results in lead deposits on spark r L Mira plugs and can cause misfiring at less than 12 000 miles Spark plugs must be replaced at 6 000 miles when operating Pm with leaded fuels Where misfiring occurs prior to 6 000 miles spark plugs in good condition can often be cleaned eegeirw oxmr tested and reinstalled in an engine with acceptable results 5 r x l Engine Compression gx Minimum compression recorded in any one cylinder should not be less than 70 of highest cylinder This test should be performed to provide reasonable assurance that I engine condition is sufficiently efficient to prevent leakage of unburned gases If a problem exists have corrections Fig 0 16 Distributor Vacuum Control Switch made e or 1