b.Following this, the engine should be run until warm so that any water left behind will be evaporatedbefore rust can form.c.If a steam jet is available, this method of cleaning is preferable to any other.d.When doing a major cleaning operation of the fins in a workshop, the whole air cowling can of course beremoved for better access.4-10.5CheckingV-belttension.a.Apply thumb pressure to check that deflection on the belt between the pulleys is not more than approx.10 mm.If the belt has to be retighten, slacken nuts and push alternator outward. Retighten nutsafter having obtained correct tension.b.New belts should be retensioned firmly a short time after having been taken into use, after 40 runninghours at the latest.c.To avoid damage to the V-belt, remove or refit the V-belt without using a screwdriver or other tools,only after slackening nuts and with the alternator completely pushed towards the engine.4-10.6Replacinglubeoilfilter. Before fitting the new filter element, wet rubber seal slightly with oil. Screw in filter byhand until seal is squarely seated. Tighten filter by a further half turn. After mounting, check for tightness during a shorttest run.4-10.7 Checkingvalveclearances. (Figure 4-10)In case of unfavorable operating conditions, such as constantly changing loads, frequent daily starting or ambient dustyconditions, shorter checking intervals are required where valve clearance must be set to the maximum gap.Figure 4-10. Checking Valve Clearance4-28
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